Machine for cutting and crimping cylinders of sheet metal.



- 0. H. PHINNEY. MACHINE FOR CUTTING AND ORIMPING CYLINDERS 0F SHEET METAL. APPLIUATION FILED APR.8, 1914.

1,1 30,677. T Patented Mar.2,1915.

WITNESSES: M Xnywggorz .a/bm v if I a- ATTORNEY NORRIS PETERS 60.. PHOTO-LITHO., WASHINGTON, D. C.

hurrah STATES rA'rErrr entice. 4

CHARLES HARVEY PHINNEY, 0E RICHMOND, VIRGINIA, ASSIGNOR TO CARROLL f0.

wILLIs, 0 RICHMOND, VIRGINIA. j A

MACHINE FOR CUTTING AND CRIMPING CYLINDERS OFSHEET METAL.

To all whom it may concern Be it known that I, CHARLES HARVEY PHINNEY, a citizen of the United States, residing at Richmond, in the county of Henrico and State of Virginia, have invented certain new and useful Improvements in Machines for Cutting andCrimping Cylinders of Sheet Metal, of which the following is a specification.

My invention relates to machines for cutting cylinders of sheet metal to length, at the same time crimping the severed end of the portion cut off; and it is especially designed for the cutting and crimping of stove pipe, or of similar light materlal.

I'Ieretofore there has been great waste inthe cutting of stove pipe. The pipe is either cut by means of hand operated shears or 111 a machine provided with rotary cutters. The pipe to be cut is crimped at one end; and from the other end it is desired to cut a portion so that the remainder may be of the desired length for the work in hand. The portion out from the pipe is plain at both ends, and is of no use as stove pipe until one of its ends has been crimped; and this necessitates a second operation. F urthermore thepiece out oif is often so short that it is not practicable to properly handle 1t in a machine so'that it may be crimped.

The object of my invention is to overcome this difficulty and to save the Waste, and I elfect this by so arranging my cutting and crimping means that the portion severed from the main tube is crimped at the same time that it is cut. Consequently any length of pipe, no matter how short, that may be cut from the mainpipe, is crimped at one end; and not only material, but a great deal of the time usually lost in the manufacture of stove pipe, is saved;

In the accompanying drawings, which form a part of this specification and in which like numerals refer to like parts, Figure 1 isa general view of the machine in plan; Fig. 2 is a View in elevation; and Fig. 3 is a detail view of the cutters and crimping rolls.

Specification of Letters Patent.

Patented Mar. 2, 1915.

Application filed April 8, 1914. Serial No. 830,343.

In this bearing box there are suitably mounted a cutter 9 and crimper 10. On the same shaft with these two there is mounted a spur gear 11, the teeth of which engage In'th'e teeth of another spur gear 12, also mounted in the bearing box, and the teeth of which in turn engage with the teeth of the; pinion 13, which pinion is also mounted in the bearing box. One end of the shaft uponwhich the pinion is mounted is prepared for receiving a crank and handle 14. It Wlll be evident that when the spur 11 is revolved the cutter 9 and the crimper 10 will also revolve. The spur 12 and the pin- Ion 13 are simply arranged so that suflicient power may be obtained, and so the crank handle may be brought to a convenient distance from the work.

VVhen operating the machine the stove pipe to be cut is slipped over the cutter 4E, and crimper 5, which are mounted on the arm 2; and in order that this may be done there must be a suitable space left between the said cutter and crimper and the cutter and crimper 9 and 10. The pipe having been placed in position, it is now necessary to bring the outside cutter and crimper into operation, and to do this I provide means, whereby the bearing boX 7 may be caused to slide, in the guides 8, toward the work. This means may be of any of the well known types, such as the endless screw, the toggle, the lever, and others. To illustrate the operation of the machine I have shown a simple lever 15, mounted on a pin 16 attached to the under side of the plate 1. The block 17 is a part of the bearing box 7, and

tached to the under side of the plate 1.

19 is a spring by which the rod '20 is caused to act against the movable block 17.; the rod 20 being slidably mounted in the fixed block 18.

Upon depressing the long arm of thelever 15 the short arm 21 will press against the movable block 17 and so move the bear ing boX 7 toward the fixed arm 2. Upon relieving the pressure on the lever 15 the spring 19 with the rod 20 will re-act against it extends through and below the plateL' 1 The block 18 is stationary and is rigidly at I "I00; I, I

I block 17, and throw the bearingbox 7 to the 10 the piece of pipe depends very much upon the proper arrangementand adjustment of This is the cutting and cr mping means. shown in detail in Fig. is the nside crimping-roll ands theinside "cutter. The 5' pipe to be cut is passed over these in the direction indicated by the arrow. is the outside crimpingroll. In one end of this roll is set the beveled shear blade or cutter-'9.

ment with the pipe a little in advance of the'crimping rolls. As soon as the crimping rolls bear upon the pipe they act as rollers causingthe pipe to revolve between them, and so present its surface continuously to the cutters. With some classes of pipe it is desirable to cause the pipe to revolve as soon as the cutters begin to engage; and to effect this, I use on the outside of the cutter 9 a spring mounted roller 22. This roller is attached by means of the spring to the spindle upon which the cutter is mounted, and it is thus adapted to bear with an elastiepressure against the pipe, and to retain the same pressure while the cutters are passing through the material.

It will now be understood thatafter placing a piece of pipe in position, and operatlng my machine, the short piece cut from at which it was severed from the main pipe; and that this will be the result, no matter how short the severed piece may be. It will be seen that, this .is an economical method of cutting pipe to length, or of cutting a number of thimbles, or of carrying out any other stove pipe operations.

Having described my invention, what I claim, and desire to protect by Letters Pat- 0 ent' of the United States, is-

l. The combination, in a pipe cutting and crimping machine, of a fixed shaft, a rotary shaft adjustable with reference to the fixed shaft, a circular cutter loosely mounted at Sfthe free end of the fixed shaft, a rotary crimping Wheel secured to the inner face of the said circular cutter, and of less diameter than the latter, a second "circular cutter The diameter of the two cutting gd rolls is such that they'come into. engage the main length will be crimped at that end Q V I 1,130,677

loosely mounted on the rotary shaft, and

arranged to out against the inner edge of the first cutter, a second crimping wheel sef cured to theinner face of the second cutter, and of less diameter than the latter, means slidab'lymounted onthe frameand adjustable to and from the fixed shaft, a circular on the rotary shaft, a second crimping wheel secured to the second cutter, means for revolving the second cutter "and crimping wheel, andmean's for ad ust ng the position of the second cutter and crimping roll with reference to'the first .cutterand crimping r0 1.

3. Thezcombinatiomin a pipe cutting and crimping machine, of two shafts approximatelyparallel with one another, one of the said shafts being arrangedso that its position may-be adjusted 'with reference to that of the other, cuttingand crimping rolls'mounted on each of the shafts, means foroperating one of the cutting and'crimping rolls,

and means for changing the position'of the shaft, a rotary shaft carried in bearings cutter mounted on the fixed shaft, a rotary cr mping ,wheel secured to one face of the said cutter, a second circular cutter mounted V movable shaft with reference to the position of the other shaft, to bring the rolls into" operative relation with one another.

4-. The combination, in a pipe cutting and crimping machine of two shafts approxi mately parallel-with one another,one of the said shafts being arranged so that its posi-o tion may-be adjusted with reference, to that of the: other, cutting and crimping rolls a mounted on each one of the shafts, means for operating one of thecutting and crimping rolls means for bringing the said cutting and crimping rollsinto operative relation with the other cutting and crimping rolls, and a feed roll elastically mounted with the operated cutting and crimping rolls, substantially asset, forth.

In testimony whereof I afi'x my signature,v in presence of two .w1tnesses.

CHARLES nanvnr Pn NNnv.

Witnesses V B. A, MARTIN,

J. BL LnY,

: Copies of this patentmay be obtained for five cents eaeh bsn"addressing the Commissioner oflfatents,

o Washingtom-RG. 1 I 1 

